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GET /api/1.0/patches/2223075/?format=api
{ "id": 2223075, "url": "http://patchwork.ozlabs.org/api/1.0/patches/2223075/?format=api", "project": { "id": 70, "url": "http://patchwork.ozlabs.org/api/1.0/projects/70/?format=api", "name": "Linux KVM RISC-V", "link_name": "kvm-riscv", "list_id": "kvm-riscv.lists.infradead.org", "list_email": "kvm-riscv@lists.infradead.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260414110212.79526-3-fangyu.yu@linux.alibaba.com>", "date": "2026-04-14T11:02:12", "name": "[v2,2/2] iommupt: Encode IOMMU_MMIO/IOMMU_CACHE via RISC-V Svpbmt bits", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "788599ad537c9610bc6268c050ba3c95e1f9dd8c", "submitter": { "id": 91416, "url": "http://patchwork.ozlabs.org/api/1.0/people/91416/?format=api", "name": null, "email": "fangyu.yu@linux.alibaba.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/kvm-riscv/patch/20260414110212.79526-3-fangyu.yu@linux.alibaba.com/mbox/", "series": [ { "id": 499817, "url": "http://patchwork.ozlabs.org/api/1.0/series/499817/?format=api", "date": "2026-04-14T11:02:10", "name": "iommu/riscv: Support Svpbmt memory types in generic_pt", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/499817/mbox/" } ], "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2223075/checks/", "tags": {}, "headers": { "Return-Path": "\n <kvm-riscv-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=lists.infradead.org header.i=@lists.infradead.org\n header.a=rsa-sha256 header.s=bombadil.20210309 header.b=PE5rn+0g;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n unprotected) header.d=linux.alibaba.com header.i=@linux.alibaba.com\n header.a=rsa-sha256 header.s=default header.b=nufAsqCo;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=none (no SPF record) smtp.mailfrom=lists.infradead.org\n (client-ip=2607:7c80:54:3::133; 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a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;\n\td=lists.infradead.org; s=bombadil.20210309; h=Sender:\n\tContent-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post:\n\tList-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:\n\tMessage-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:\n\tResent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:\n\tList-Owner; bh=Awemrw8QHUZz+I97BD5qZZ+0i3OJcmJD4XMnfuA0hKM=; b=PE5rn+0g1OFlcg\n\tt3YZ9tY4isDOWXyQdNtbShDCWECiIojrO1I9OSjIaMkhTGICagsXfgSXgZqO2DCQ00punaHYpK8xv\n\tQH7gNOffF0rZ3CxGJvm5thZLtMP26/S0J2D/HV50pHhMghInts5id1JBEsi9Gcf/+87/aFM0WJs+y\n\tiUz9+AswcK5iU4pTdDAK46keVv85MMFLnSrsVLxOtgRqBH/QVsvKbevNwacNC4veEHxsVuqX0Tb4p\n\tD4WRQm9V482sJhRBeGkjOAW0qASvymjQVHrqIxIxFGYu5DPysNU7apG2UdcV0V5ez8nqWd5CHzDZp\n\tLvv/AvXWntsXBtHY38BA==;", "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=linux.alibaba.com; s=default;\n\tt=1776164543; h=From:To:Subject:Date:Message-Id:MIME-Version;\n\tbh=1oJx6C7bTbqFRerwQikbn4XOKcny9PNxkWumn9MgJrw=;\n\tb=nufAsqCotC4rx1MDZhdNVshrOQ93u9/+cOCSFDgLxdYzTPrxnrsKFHyOel3fjULL1jxbbZNx5lPTqQgTmxEgDQsxbLOE5grDaSUBIJf0s0mK0Uaxa7cSEPDoCU9hFPcKOjpPCI+zqUu0q5eUxXAx+cY9dz+089i7JAMd2rqA6go=" ], "X-Alimail-AntiSpam": "\n AC=PASS;BC=-1|-1;BR=01201311R191e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033037026112;MF=fangyu.yu@linux.alibaba.com;NM=1;PH=DS;RN=21;SR=0;TI=SMTPD_---0X11DRTQ_1776164538;", "From": "fangyu.yu@linux.alibaba.com", "To": "joro@8bytes.org,\n\twill@kernel.org,\n\trobin.murphy@arm.com,\n\tpjw@kernel.org,\n\tpalmer@dabbelt.com,\n\taou@eecs.berkeley.edu,\n\talex@ghiti.fr,\n\ttjeznach@rivosinc.com,\n\tjgg@ziepe.ca,\n\tkevin.tian@intel.com,\n\tbaolu.lu@linux.intel.com,\n\tvasant.hegde@amd.com,\n\tanup@brainfault.org,\n\tnutty.liu@hotmail.com,\n\tjgg@nvidia.com", "Cc": "guoren@kernel.org,\n\tiommu@lists.linux.dev,\n\tkvm-riscv@lists.infradead.org,\n\tlinux-riscv@lists.infradead.org,\n\tlinux-kernel@vger.kernel.org,\n\tFangyu Yu <fangyu.yu@linux.alibaba.com>", "Subject": "[PATCH v2 2/2] iommupt: Encode IOMMU_MMIO/IOMMU_CACHE via RISC-V\n Svpbmt bits", "Date": "Tue, 14 Apr 2026 19:02:12 +0800", "Message-Id": "<20260414110212.79526-3-fangyu.yu@linux.alibaba.com>", "X-Mailer": "git-send-email 2.39.3 (Apple Git-146)", "In-Reply-To": "<20260414110212.79526-1-fangyu.yu@linux.alibaba.com>", "References": "<20260414110212.79526-1-fangyu.yu@linux.alibaba.com>", "MIME-Version": "1.0", "X-CRM114-Version": "20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 ", "X-CRM114-CacheID": "sfid-20260414_040227_352012_B194878A ", "X-CRM114-Status": "UNSURE ( 6.98 )", "X-CRM114-Notice": "Please train this message.", "X-Spam-Score": "-17.6 (-----------------)", "X-Spam-Report": "Spam detection software,\n running on the system \"bombadil.infradead.org\",\n has NOT identified this incoming email as spam. The original\n message has been attached to this so you can view it or label\n similar future email. If you have any questions, see\n the administrator of that system for details.\n Content preview: From: Fangyu Yu <fangyu.yu@linux.alibaba.com> When the\n RISC-V\n IOMMU page table format support Svpbmt,\n PBMT provides a way to tag mappings\n with page-based memory types. Encode memory type via PBMT in RISC-V IOMMU\n PTEs:\n Content analysis details: (-17.6 points, 5.0 required)\n pts rule name description\n ---- ----------------------\n --------------------------------------------------\n -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no\n trust\n [115.124.30.101 listed in list.dnswl.org]\n -0.0 SPF_PASS SPF: sender matches SPF record\n -7.5 USER_IN_DEF_DKIM_WL From: address is in the default DKIM welcome-list\n -7.5 USER_IN_DEF_SPF_WL From: address is in the default SPF welcome-list\n 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record\n -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from\n envelope-from domain\n 0.1 DKIM_SIGNED Message has a DKIM or DK signature,\n not necessarily valid\n -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from\n author's\n domain\n -0.1 DKIM_VALID Message has at least one valid DKIM or DK\n signature\n -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n [score: 0.0000]\n 0.0 RCVD_IN_VALIDITY_CERTIFIED_BLOCKED RBL: ADMINISTRATOR NOTICE: The\n query to Validity was blocked. See\n https://knowledge.validity.com/hc/en-us/articles/20961730681243\n for more information.\n [115.124.30.101 listed in\n sa-trusted.bondedsender.org]\n 0.0 RCVD_IN_VALIDITY_SAFE_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to\n Validity was blocked. See\n https://knowledge.validity.com/hc/en-us/articles/20961730681243\n for more information.\n [115.124.30.101 listed in sa-accredit.habeas.com]\n 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay\n lines\n -0.5 ENV_AND_HDR_SPF_MATCH Env and Hdr From used in default SPF WL Match\n 0.0 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2)\n [115.124.30.101 listed in wl.mailspike.net]\n 0.0 RCVD_IN_VALIDITY_RPBL_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to\n Validity was blocked. See\n https://knowledge.validity.com/hc/en-us/articles/20961730681243\n for more information.\n [115.124.30.101 listed in\n bl.score.senderscore.com]", "X-BeenThere": "kvm-riscv@lists.infradead.org", "X-Mailman-Version": "2.1.34", "Precedence": "list", "List-Id": "<kvm-riscv.lists.infradead.org>", "List-Unsubscribe": "<http://lists.infradead.org/mailman/options/kvm-riscv>,\n <mailto:kvm-riscv-request@lists.infradead.org?subject=unsubscribe>", "List-Archive": "<http://lists.infradead.org/pipermail/kvm-riscv/>", "List-Post": "<mailto:kvm-riscv@lists.infradead.org>", "List-Help": "<mailto:kvm-riscv-request@lists.infradead.org?subject=help>", "List-Subscribe": "<http://lists.infradead.org/mailman/listinfo/kvm-riscv>,\n <mailto:kvm-riscv-request@lists.infradead.org?subject=subscribe>", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Sender": "\"kvm-riscv\" <kvm-riscv-bounces@lists.infradead.org>", "Errors-To": "kvm-riscv-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org" }, "content": "From: Fangyu Yu <fangyu.yu@linux.alibaba.com>\n\nWhen the RISC-V IOMMU page table format support Svpbmt, PBMT provides\na way to tag mappings with page-based memory types. Encode memory type\nvia PBMT in RISC-V IOMMU PTEs:\n\n - IOMMU_MMIO -> PBMT=IO\n - !IOMMU_MMIO && !IOMMU_CACHE -> PBMT=NC\n - otherwise -> PBMT=Normal (PBMT=0)\n\nOnly touch PBMT when PT_FEAT_RISCV_SVPBMT is advertised.\n\nSigned-off-by: Fangyu Yu <fangyu.yu@linux.alibaba.com>\nReviewed-by: Jason Gunthorpe <jgg@nvidia.com>\nReviewed-by: Anup Patel <anup@brainfault.org>\nReviewed-by: Guo Ren <guoren@kernel.org>\nReviewed-by: Nutty Liu <nutty.liu@hotmail.com>\n---\n drivers/iommu/generic_pt/fmt/riscv.h | 8 ++++++++\n 1 file changed, 8 insertions(+)", "diff": "diff --git a/drivers/iommu/generic_pt/fmt/riscv.h b/drivers/iommu/generic_pt/fmt/riscv.h\nindex a7fef6266a36..57e51e5def9f 100644\n--- a/drivers/iommu/generic_pt/fmt/riscv.h\n+++ b/drivers/iommu/generic_pt/fmt/riscv.h\n@@ -64,6 +64,8 @@ enum {\n \tRISCVPT_PPN64 = GENMASK_ULL(53, 10),\n \tRISCVPT_PPN64_64K = GENMASK_ULL(53, 14),\n \tRISCVPT_PBMT = GENMASK_ULL(62, 61),\n+\tRISCVPT_NC = BIT(61),\n+\tRISCVPT_IO = BIT(62),\n \tRISCVPT_N = BIT_ULL(63),\n \n \t/* Svnapot encodings for ppn[0] */\n@@ -237,6 +239,12 @@ static inline int riscvpt_iommu_set_prot(struct pt_common *common,\n \t\tpte |= RISCVPT_R;\n \tif (!(iommu_prot & IOMMU_NOEXEC))\n \t\tpte |= RISCVPT_X;\n+\tif (common->features & BIT(PT_FEAT_RISCV_SVPBMT)) {\n+\t\tif (iommu_prot & IOMMU_MMIO)\n+\t\t\tpte |= RISCVPT_IO;\n+\t\telse if (!(iommu_prot & IOMMU_CACHE))\n+\t\t\tpte |= RISCVPT_NC;\n+\t}\n \n \t/* Caller must specify a supported combination of flags */\n \tif (unlikely((pte & (RISCVPT_X | RISCVPT_W | RISCVPT_R)) == 0))\n", "prefixes": [ "v2", "2/2" ] }